Side bearing



J. OCONNOR.

SIDE BEARING.

APPLICATION n! ED SEPT.25,1919.

Patented Nov`l 2, 1920.

tached.

- anti-friction element B, and

UNITED STATES PATENT orion.

JOHN n. oooNNoR, or CHICAGO, rLLiNois, nssieivon 'ro WILLIAM H. MINER, on oHAzY, NEW YORK.

SIDE BEARING.

Specification of Letters Patent.

Patented Nov. 2, 1920.

Applieationlled September 25, 1919. Serial No. 326,122.

To all fw 71.077?, t may concern Be it known that I, JOHN F. OCoNNon, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Side Bearings, of which'the following' is a full, clear, concise, and exact description, referencebeing had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements in side bearings.

T he object of the invention is to provide a side bearing adapted for1 4railway cars wherein the anti-friction element of the bearing is self-centering under the influence of gravity, is non-shiftable, and is provided with a plurality of sets of friction surfaces,

' any set of which may be brought into use.

In 'the drawing forming' a partV of this specification, Figure 1 is apart sectional part elevationalfview of portions of body and truck holsters of a railway car showing' my improvements in connection therewith, F ig. 2 is a vertical sectional view of the side hearing` proper taken substantially on the line 2-2of Fig. l. Fig'. 3 is 'an elevational view of a side bearing similar to that shown in Fig. 1 but illustrating a somewhatldilferent construction. F ig.4 is a sectional view corresponding'to F ig. 2 taken on the line lud of Fig. 3.. And Fig'. 5 is a' detail. perspective of one oftlie guiding; arms employed in the construction. illustratedV in Figs. 1 and2. f

Referring first" to the construction illustrated'in Figs. 1, 2 and 5, l10 denotes the `under side of a body bolster, and 11` the upper side of a 4truck bolster to which my improved side bearing is preferably at- The side bearing,`as shown,` con'- sists, broadly, of three elements, a housing or retaining member or base castinfr A, an lseparable counter-balancing guide arms' C-G. f

The base casting A, as shown, is of sub stantially hollow box-like form having' parallel spaced'side walls 12,12, curvedend walls 13-13, a bottom bearing` wall 14, and

`perforated corner lugs 15, whichfit is adapted to be riveted` -or otherwise ,secured to the bolster. Openings 16 are formed in Athe side walls to permit dirt and other foreign material to be washed out. `Also, the side walls 12A are provided withflatel'al integral offsets indicated at 17--e17 the latter havingguiding faces 18-18 on the interior thereof which 'slope' upwardly and away from the center of the bearing, as Vviewed in Fig. 1. 'iat the tops of the guiding surfacesy 18, iiiturned rounded shoulders 19-19 are provided and between the shoulders 19 an entranceopeninp; 2O is provided to admit the arms (l-C: `hereinafter i described. Said lateral extensions 12. of the base casting are extended above the general Atop level of the base casting', as clearly indicated in Fig. 1, and 'at their upper ends said offsets are perforated tol accommodate long retaining` cotters 21( .The anti-friction element B is of substantially triangular form in end elevation and is formed with three sets of concentricbearing surfaces of different radii, the same being referenced 22-22L 2. ,-23% "and 24.- :Qllb With this construction, it "is evident that the element B is symmetrical,'aiid, con- -sequeiitly any set of the concent,ric.bearingr surfaces'niay be utilizedby adjusting` the member so asto brinpthe proper bearingr i Ato a balanced' position under the influence of lgravity, nevertheless, it is desirable to pro- ;vide meansV for positively 'preventing bodily shiftingr of said element B with respect to thel base casting A. Thisfunction `is performed yby the pair of arms C, each of the latter being in the form ofa plate, indicated at 25, 'of a shapehereinafter described, and atriangular-lug 26. The triangular lugsQG .are arranged to fit snugly within triangular .sockets 27 provided in the ends of `the ele- .inent B, so that,while `the yarms C are normally; ripjd` with `,respect i to S the element i B, nevertheless,` they may be `adiusted to any one of three positions, in accordance with the particular set of concentric bearing surfaces which is being` employed at the time.

.i Each' plate ,is relatively ywide near` lits bottom and the edges are `gradually brought together toward the top `so as to provide a taperedor wedge shaped "upper, end indicated at28." Themaximum `width of the plate 25` corresponds substantially to thedistance transversely between the guiding surfaces 18-18 between which the plate is received, soy that "the plate, and, consequently, the element B, can not be shifted lbodily more than a predetermined distance, according to the slight clearance left between the edges of the plate .C and the guiding surfaces 18'. The exact contour ofthe edges of the plates 25 is made-4 such thatthe` distance, horizontally, across the plate in any angular position ofthe latter, will-correspond substantially to the horizontal distance *between the yguiding'surfaces 18 at the same level. l/Vith this construction, it is evident that theelemen-tB` is free to rock, while, atthe `same time, the plates of the arms@ prevent the-element vB Vfrom lbecoming'displaccdand the lattermust returnto itsfcentralnormal position under the influence of.gravityafterfeach actuation. lt will also be lnoted that-the armsV C assist in returning'the elementiB-to normal sinee'theyfact in :the nature of counter-balances which "are vnecessarily elevated' as the element B is rolled to either side ofnorma'l position.

.In the constructionillustrated in Figs. 3 and L1,the same principles are employed, .the `housing or base castingbeing designated as Affthe anti-frictionielement as B', andthe 'guiding arms as C. Thezarms'C are made adjustable withirespect'to the rocher B, as: described 1n connection withthe'construc- `tionshownin Figs. 1, Qand 5.' Substantially the only difference is inimaking the bottom wall v11f1ofA thebase castingseparate from the mainlpart thereofE and'ma-king the laterallyofisetguiding recesses closedat their topsbyl integral walls 121 `instead of by employing the cotters-21! for holding-fthe parts inlassembled relation. Inthe construction 'shown' 1in Figs 1l and`v` 2, the anti-friction element is inserted ffrom' the top,` afterV which the cotters21 are inserted, while in the rconstruction shown in Figsa and 4 the antifriction element` isiinserted from `the 4bottom -andfthe'bottom wall 1141 linserted afterl the anti-friction element. In this construction the 'parts will beheld assembled when the 4base castingis rivetedfto the bolster. Also,

a slightly different configuration for the armslC isshown than thatforthearms C, which in turni lnecessitates la slightly 'differlent contourforthe guiding recesses coperatingthereivith but the 'principle of determiningfthe relation between the plates of 'the' guiding armsra'nd'the recesses Iisfthe' same las 'that described fforf' the construction shown irl'FgsalgandQ; V

Ifclainr; f u .y Y .n 1".- In amanti-friction bemqng Off-the Cham acterf described,"the combination? with Aa h0lflow iretaining-1membery adapted to `be secured 'toaa bolsterand provided with aV 'atr'hori# zontal bearing seat, ofl an anti-frictioneleyment-dispo'sed within said: member and 'hav- 'taining member having a bea-ring seat,.of

an anti-friction element adaptedtoroll on said seat in either directionwfrornl normal, afcenteringmember rigidwith respect` to said element and adapted to be elevated when said element isrolled to either side of normal, said retainingqmember having guiding surfaces vcoperable. with ,said centering member said centering `memberbeing detachabley `with respectlto the'anti-'friction elementandattachable to :the-"latter in different. positions.

3.111 an anti-.friction bearing'of the=char acter` described, the combination Vwithva retaining member, /of' an anti-friction,` element, said member having "a bearing seat horizontalthroughout and Von which said element bears Vand isi adaptedA to roll. to

Aeither side ofnormalposition, said element having: an .eccentrically disposed arm rigid with respect thereto and adapted 'to Ibe 'elevated when Vthe Velement *is rolled Vfrom its normal position, said. retaining Vmember having guiding surfaces coperableA with said arm to prevent;bodily'shifting ofi-said element with respectto =the retainingmember, saidVl arm andA element :being separately formed and adapted 'for rigidconnectio in different angular relations.

f1. `In ananti-frictionbearing of thecharacter describecb'thel combination` with a retaining member, of a rocker bodily movable within said member, said rocker 'having a pluralityl of sets of concentric bearingsurfaces of diiierent radii,and an arm rigidly attachedto said rocker, said member having a guide to accommodate saidarm, said arm `115 being 'adj ustably vattachable ltothe rocker in .a number of` positionscorresponding tothe number of sets of: bearing surfaces'. y

5. In an anti-friction bearlng, the combinatlon with a 'hollow 'housingihaving av Vbearing surface therein, `o'f a gravity selfreturning yrocker disposed within said me1nber, said member having vguiding `recesses opposite the ends ofthe rocker, said rocker Vhaving guiding arms rigidly attached ythereto at its ends and working 1n said recesses, said arms beingdetachable 'from the rockerl without destructive effect when the rocker is dis-assembled from the housing.`

V16, In an antifriction bearing, the comv13() bination With a hollow retaining member' adapted t0 be secured to a bolster, of a rocker disposed Within said retaining mem. ber, said rocker having a plurality of sets of concentric bearing surfaces of different radii7 and a combined centering and guiding arm detachably connected to said rocker and adjustable to different positions with respect thereto according to the number of sets of bearing surfaces.

7. In an anti-friction bearing, the combination with a hollo-W base casting adapted to be secured to a bolster, of a self-returning gravity rocker disposed Within said base casting, said rocker having a plurality of sets of concentric bearing surfaces of different radii and guiding arms rigidly attached to the rocker at the ends thereof, said guiding arms being adjustable to different positions relatively to the rocker in accordance With the number of sets of bearing surfaces thereof, said base casting having guiding surfaces in the side Walls thereof coperable with said arms.

In Witness that I claim the foregoing I have hereunto subscribed my name this 8th day of Sept. 1919.

JOHN F. OCONNOR. 

